CVE-2018-8020 Apache Tomcat Native Connector - Mishandled OCSP responses can allow clients
to authenticate with revoked certificates
Severity: Important
Vendor: The Apache Software Foundation
Versions Affected:
Apache Tomcat Native 1.2.0 to 1.2.16
Apache Tomcat Native 1.1.23 to 1.1.34
Description:
Apache Tomcat Native has a flaw that does not properly check OCSP pre-produced
responses, which are lists (multiple entries) of certificate statuses.
Subsequently, revoked client certificates may not be properly identified,
allowing for users to authenticate with revoked certicates to connections that
require mutual TLS.
Users not using OCSP checks are not affected by this vulnerability.
Mitigation:
Users of the affected versions should apply one of the following
mitigations:
- Upgrade to Apache Tomcat 1.2.17 or later
Note: This version was included in Apache Tomcat 9.0.10 onwards, 8.5.32
onwards, 8.0.53 onwards and 7.0.90 onwards.
History:
2018-03-09 Original advisory
References:
[1] http://tomcat.apache.org/security-native.html